linux-stable.git/include/linux/types.h, branch v5.4.301

types: Complement the aligned types with signed 64-bit one

2025-06-04T12:32:27+00:00

[ Upstream commit e4ca0e59c39442546866f3dd514a3a5956577daf ]

Some user may want to use aligned signed 64-bit type.
Provide it for them.

Signed-off-by: Andy Shevchenko 
Link: https://patch.msgid.link/20240903180218.3640501-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron 
Stable-dep-of: 5097eaae98e5 ("iio: adc: dln2: Use aligned_s64 for timestamp")
Signed-off-by: Sasha Levin

locking/atomic: Use s64 for atomic64_t on 64-bit

2019-06-03T10:32:57+00:00

Now that all architectures use 64 consistently as the base type for the
atomic64 API, let's have the CONFIG_64BIT definition of atomic64_t use
s64 as the underlying type for atomic64_t, rather than long, matching
the generated headers.

On architectures where atomic64_read(v) is READ_ONCE(v->counter), this
patch will cause the return type of atomic64_read() to be s64.

As of this patch, the atomic64 API can be relied upon to consistently
return s64 where a value rather than boolean condition is returned. This
should make code more robust, and simpler, allowing for the removal of
casts previously required to ensure consistent types.

Signed-off-by: Mark Rutland 
Signed-off-by: Peter Zijlstra (Intel) 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Will Deacon 
Cc: aou@eecs.berkeley.edu
Cc: arnd@arndb.de
Cc: bp@alien8.de
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: fenghua.yu@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: ink@jurassic.park.msu.ru
Cc: jhogan@kernel.org
Cc: linux@armlinux.org.uk
Cc: mattst88@gmail.com
Cc: mpe@ellerman.id.au
Cc: palmer@sifive.com
Cc: paul.burton@mips.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rth@twiddle.net
Cc: tony.luck@intel.com
Cc: vgupta@synopsys.com
Link: https://lkml.kernel.org/r/20190522132250.26499-17-mark.rutland@arm.com
Signed-off-by: Ingo Molnar

block: remove CONFIG_LBDAF

2019-04-06T16:48:35+00:00

Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit
architectures.  These types are required to support block device and/or
file sizes larger than 2 TiB, and have generally defaulted to on for
a long time.  Enabling the option only increases the i386 tinyconfig
size by 145 bytes, and many data structures already always use
64-bit values for their in-core and on-disk data structures anyway,
so there should not be a large change in dynamic memory usage either.

Dropping this option removes a somewhat weird non-default config that
has cause various bugs or compiler warnings when actually used.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

include/linux/types.h: use "unsigned int" instead of "unsigned"

2019-03-08T02:31:59+00:00

Use "unsigned int" instead of "unsigned", to make code more clear.

Link: http://lkml.kernel.org/r/1551354739-6648-1-git-send-email-wdjjwb@163.com
Signed-off-by: WangBo 
Reviewed-by: Masahiro Yamada 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

types: Remove call_rcu_bh() and call_rcu_sched()

2018-12-01T20:38:48+00:00

Now that call_rcu()'s callback is not invoked until after bh-disable and
preempt-disable regions of code have completed (in addition to explicitly
marked RCU read-side critical sections), call_rcu() can be used in place
of call_rcu_bh() and call_rcu_sched().  This commit therefore removes
these two API members from the callback_head structure's header comment.

Signed-off-by: Paul E. McKenney 
Cc: Andrew Morton 
Cc: Pekka Enberg 
Cc: Masahiro Yamada 
Cc: Alexey Dobriyan

include/linux/types.h: use fixed width types without double-underscore prefix

2018-06-08T00:34:38+00:00

This header file is not exported.  It is safe to reference types without
double-underscore prefix.

Link: http://lkml.kernel.org/r/1526350925-14922-3-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada 
Cc: Geert Uytterhoeven 
Cc: Alexey Dobriyan 
Cc: Lihao Liang 
Cc: Philippe Ombredanne 
Cc: Pekka Enberg 
Cc: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

include/linux/types.h: define aligned_ types based on uapi header

2018-06-08T00:34:38+00:00

 has the same typedefs except that it prefixes them
with double-underscore for user space.  Use them for the kernel space
typedefs.

Link: http://lkml.kernel.org/r/1526350925-14922-2-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada 
Reviewed-by: Andrew Morton 
Cc: Geert Uytterhoeven 
Cc: Alexey Dobriyan 
Cc: Lihao Liang 
Cc: Philippe Ombredanne 
Cc: Pekka Enberg 
Cc: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

doc: Fix typo in rcu_head comments

2018-02-21T00:10:25+00:00

Signed-off-by: Lihao Liang 
Signed-off-by: Paul E. McKenney

slab, slub, slob: convert slab_flags_t to 32-bit

2017-11-16T02:21:01+00:00

struct kmem_cache::flags is "unsigned long" which is unnecessary on
64-bit as no flags are defined in the higher bits.

Switch the field to 32-bit and save some space on x86_64 until such
flags appear:

	add/remove: 0/0 grow/shrink: 0/107 up/down: 0/-657 (-657)
	function                                     old     new   delta
	sysfs_slab_add                               720     719      -1
				...
	check_object                                 699     676     -23

[akpm@linux-foundation.org: fix printk warning]
Link: http://lkml.kernel.org/r/20171021100635.GA8287@avx2
Signed-off-by: Alexey Dobriyan 
Acked-by: Pekka Enberg 
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

slab, slub, slob: add slab_flags_t

2017-11-16T02:21:01+00:00

Add sparse-checked slab_flags_t for struct kmem_cache::flags (SLAB_POISON,
etc).

SLAB is bloated temporarily by switching to "unsigned long", but only
temporarily.

Link: http://lkml.kernel.org/r/20171021100225.GA22428@avx2
Signed-off-by: Alexey Dobriyan 
Acked-by: Pekka Enberg 
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Joonsoo Kim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds